168018317 has 2 divisors, whose sum is σ = 168018318. Its totient is φ = 168018316.

The previous prime is 168018313. The next prime is 168018341. The reversal of 168018317 is 713810861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152423716 + 15594601 = 12346^2 + 3949^2 .

It is a cyclic number.

It is not a de Polignac number, because 168018317 - 2² = 168018313 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168018313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84009158 + 84009159.

It is an arithmetic number, because the mean of its divisors is an integer number (84009159).

Almost surely, 2^168018317 is an apocalyptic number.

It is an amenable number.

168018317 is a deficient number, since it is larger than the sum of its proper divisors (1).

168018317 is an equidigital number, since it uses as much as digits as its factorization.

168018317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 168018317 is about 12962.1879711722. The cubic root of 168018317 is about 551.8048882039.

The spelling of 168018317 in words is "one hundred sixty-eight million, eighteen thousand, three hundred seventeen".